Dràm Mòr Single Cask Rum Foursquare Distillery Aged 13 Years. The success of the Foursquare Distillery is ongoing. Bottles in the Exceptional Cask Series are now being available only via a ballot at some of the bigger UK retailers. To be honest the very idea of a ballot, whereby you enter a raffle to actually spend your own money is pretty mind boggling in the rum world. However, it has been fairly common place for some time in the world of Scotch Whisky.